Basically, im thinking its a tiny partial blockage that won't show up on an xray or even a barium study. Im almost at the point to say exploratory surgery on the small intestine to visual see it. He has lost around 1lb, and 1/4 pound from yesterday. He was probably closer to around 5lbs before this and gaining at a healthy pace. Now he is 3.75 pounds. Either way if it doesn't eat even though i took care of the dental pain, i know it must be a tiny blockage.
Remember the blood tests show he isn't fighting anything and everything is completly inline with a healthy kitten.